Creating a new warehouse in ERPNext V5

I go to
Stock/Warehouse/New Warehouse
When I go to set the Parent Account I can only select the groups not the actual account.
When I browse the Chart of Accounts I can see the correct account.
I am wondering what I am doing wrong?

If you leave the field blank it will create a warehouse account under ´Stock Assets´.

Thanks,
But when I leave it blank I get the following dialog.

This is how I have defined my stock assets in the Chart of Accounts

			"1090 - Vörubirgðir": {
				"1091 - Birgðageymsla": {
					"account_type": "Stock"
				}
			}

I was expecting to be able to select
1091 - Birgðageymsla
for the warehouse I am creating.

Try following:

"1091 - Birgðageymsla": {
    "account_type": "Stock"
    "group_or_ledger": "Group"
}

Thanks,
This works.
But a better solution would be if it was possible to define a default warehouse for items in the chosen Chart of Accounts.